How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Phil Your Own Question
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
23932409
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

I have no air conditioning blowing and it displays that it

Customer Question

I have no air conditioning blowing and it displays that it is on. How can I fix it?
Submitted: 7 months ago.
Category: HVAC
Expert:  airheatman replied 7 months ago.

Does indoor or outdoor units either one come on/

Customer: replied 7 months ago.
No they don't. I live in a condo and its outside.
Expert:  airheatman replied 7 months ago.

Lets start by checking breaker at indoor unit and make sure it is on.If everything is outside,check breaker there. Then give me model an ac unit

Customer: replied 7 months ago.
The breaker inside is fine. This is the one outside
Expert:  airheatman replied 7 months ago.

OK everything is controlled by the indoor unit. Do you have a volt meter to troubleshoot and can you open the indoor unit to expose wiring?

Customer: replied 7 months ago.
I can open indoor unit. I checked and no wires were loose.
Expert:  airheatman replied 7 months ago.

Give me model on indoor unit

Customer: replied 7 months ago.
RTH7400
Honeywell
Expert:  airheatman replied 7 months ago.

Not thermostat but air handler. Your thermostat has batteries so it will give us display and show on even if we have no power to unit. If you can give me model on indoor air handler or furnace I will tell you where to look for a possible small fuse in unit that may be blown.

http://i.imgur.com/kYe4Epz.png

Customer: replied 7 months ago.
Where is that usually located? I live in a condo so I'm not sure what to look for
Expert:  airheatman replied 7 months ago.

Usually in a closet,basement or attic.If you can find the return where you replace filter, follow that and it will take you to unit

Customer: replied 7 months ago.
Is this it?
Expert:  airheatman replied 7 months ago.

NO it will be a large grille where air goes into unit

Expert:  airheatman replied 7 months ago.

Air handler we are looking for will be similar to this

Customer: replied 7 months ago.
Sorry... This?
Expert:  airheatman replied 7 months ago.

Yes lets remove panel and then send me another pic inside

Customer: replied 7 months ago.
Expert:  airheatman replied 7 months ago.

Great now remove screws and remove this panel

Customer: replied 7 months ago.
Expert:  airheatman replied 7 months ago.

OK do you see a fuse in the section on right side (Thermostat wiring 24v)?

Pull those wires out where I can see them

Customer: replied 7 months ago.
Expert:  airheatman replied 7 months ago.

OK does not like you have a fuse. Next step will be to check voltage

. If you have a meter let me know .If not you can get an inexpensive one at Walmart for about 15 bucks if you would like to troubleshoot and I would be happy to guide you.

http://www.walmart.com/ip/Innova-3300-Equus-3300-Hands-free-Digital-Multimeter/14644665

Customer: replied 7 months ago.
I do not but can get one. What section can it be found? Will troubleshooting it fix the problem?
Expert:  airheatman replied 7 months ago.

It will be in tool section at Walmart. Depends on what we find as to what has to be replaced.If no power to unit, maybe a breaker.If power to unit but not out of transformer may be transformer.

By the way have you checked all of your circuit breakers? We could just have a breaker off or tripped.

Customer: replied 7 months ago.
Breaker
Expert:  airheatman replied 7 months ago.

They all appear ON. I thing next we should get the meter and go to air handler. Remove the little cover and verify we are getting power at the air handler.

Customer: replied 7 months ago.
Ok I got the meter. Now what do I do
Expert:  airheatman replied 7 months ago.

Start by opening the little junction box in air handler. Set meter to ac volts )lowest setting above 120 )Remove wire nuts (being careful not to touch wires together or to cabinet and check between th white and black for power

Customer: replied 7 months ago.
Ill be home in ten min
Expert:  airheatman replied 7 months ago.

Going to eat but will be back in office shortly.This junction box I am referring to